12165723760 has 20 divisors (see below), whose sum is σ = 28285307928. Its totient is φ = 4866289472.

The previous prime is 12165723733. The next prime is 12165723761. The reversal of 12165723760 is 6732756121.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12165723761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76035694 + ... + 76035853.

Almost surely, 2^12165723760 is an apocalyptic number.

12165723760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12165723760 is an abundant number, since it is smaller than the sum of its proper divisors (16119584168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12165723760 is a wasteful number, since it uses less digits than its factorization.

12165723760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152071560 (or 152071554 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 12165723760 in words is "twelve billion, one hundred sixty-five million, seven hundred twenty-three thousand, seven hundred sixty".